gilbert: the lantern-fishes of japan 101 



The suprapectoral is on the lateral line, the upper infrapectoral on a level 

 with it and a trifle posterior. Fourth thoracic elevated, on level of middle of 

 pectoral fin. Ventrals 4, the second a very little farther out at the side than 

 the others, the fourth at sides of vent. Supraventral, third supra-anal, and 

 posterolateral immediately below lateral line, the last precaudal on or above 

 the lateral line. Supra-anals forming a very blunt angle, the third vertically 

 above the first antero-anal, the second above the vent, the first just anterior to 

 the third ventral; first and second on the same level, which is also that of the 

 fourth thoracic. Antero-anals 7, their line not arched, the first two more widely 

 spaced than the others, the last one elevated as usual. Postero-anals 8, con- 

 tinuous with the precaudals, the latter more widely spaced. Anterior 3 pre- 

 caudals in a gentle curve at base of lower caudal lobe and evenly spaced, the 

 fourth much more widely separated, above and slightly anterior to the third, 

 on or a little above the lateral line. 



The pectoral is injured, but was evidently short, and consisted of extremely 

 delicate rays which are however more numerous than represented by Giinther, 

 being twelve or fourteen in number. 



The color was black, the body is much slenderer than is represented 

 by Brauer (1. c, p. 242, fig. 159), the depth a trifle less than one-fifth the 

 length. The precaudals are also differently arranged, there being three instead 

 of two along the base of the lower caudal lobe, and a fourth on lateral line, 

 above and slightly anterior to the third. It may be that Brauer's figure is not 

 entirely reliable, but the doubt he expresses concerning the identity of his 

 specimens with Glinther's species must also hold with the one here reported 

 from Japan. 



The three specimens previously reported from the Hawaiian Islands 

 (Gilbert, Bull. U. S. Fish Com. for 1903 [1905], Part 2, p. 591) belong to this 

 species. In the description, by error, four pectoral photophores are described, and 

 the pectorals are said to contain but few (three to six) rays. A more careful 

 examination shows the pectoral to contain about twelve excessively slender rays. 



28. Lampanyctus microchir sp. nov. 



Type 22 mm. in total length, 18 mm. to base of caudal; from Albatross 

 Station 5064, Suruga Bay, intermediate net at 300 fathoms. 



Very closely allied to L. micro-pterus Brauer, differing in the following details 

 in the arrangement of the photophores: 



1. Suprapectoral on the lateral line, instead of a short distance below it. 



